Pakistan has delivered a revised peace proposal from Iran to the US, sources in Islamabad told reporters on Monday.

According to Reuters news agency, both sides were warned that they "don't have much time" to narrow their differences before the situation escalates again.

Without providing details of the changes, the source told Reuters that Washington and Tehran "keep changing their goal posts."

Although a fragile six-week ceasefire remains in place, talks led by Pakistan have continued to stall and US President Donald Trump has said that the current truce is "on life support."

One of the major sticking points is Washington's call for Tehran to stop its nuclear program and its de facto blockade of the Strait of Hormuz, a key waterway that controls the flow of one-fifth of the world's oil and liquified natural gas. For its part, Iran wants compensation for war damage as well as an end to all hostilities, which includes Israeli strikes in Lebanon.

Trump holds off on strike, believe deal possible 

Over the weekend, Trump wrote in a post on his Truth Social website that "the Clock is Ticking" for Iran, adding that "they better get moving, FAST, or there won't be anything left ‌of ​them. TIME IS OF THE ESSENCE!"

In a post on social media Trump said he would "hold off" an attack on Iran st the request of Gulf leaders.

He said "serious negotiations" were underway with Iran and that Gulf states and believed "a deal will be made."

It was also reported that he had hopeda meeting with Chinese President Xi Jinping last week would result in assurances from Beijing that it would pressure Iran to give in to US demands, but no such promises materialized.

Edited by: Louis Oelofse